Trading players away on speculative, non-scientific hunches is not good business. I'm not saying Sale won't get injured in his career, but this book you speak of is closer to a conspiracy theory than a history textbook.

You're kidding yourself if you think that the only people who speculate on this kind of thing are fans on message boards. It's just business, plain and simple. You don't need a degree in science to see that Sale has already had arm problems, and to the surprise of no one, really. All trades are speculative and are partly based on un-scientific elements.